G01N 2021/414
Correcting temperature effect in refractometers
Official title: {Correcting temperature effect in refractometers}
G01N2021/414 (Correcting temperature effect in refractometers) appears on 23 US grants and 24 published applications in this corpus.
Search patents in G01N- Granted patents
- 23
- Published applications
- 24
- Assignees
- 26
- Inventors
- 61
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 3 |
| 2018 | 2 | 3 |
| 2019 | 2 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermo-optic coefficient measurement systems18 Aug 2026US 12,710,363 B2Simmonds Precision Products, Inc.
- Accurate temperature reading of fluid near interface17 Oct 2023US 11,788,902 B2Entegris, Inc.
- Thermo-optic refractometry17 May 2022US 11,333,601 B1The United States of America as represented by the Secretary of the Air Force
- Method for evaluating and controlling temperature influence on a homogeneity test for infrared optical materials20 Oct 2020US 10,809,191 B1China North Standardization Center
- Disposable liquid chemical sensor system28 Jan 2020US 10,545,087 B2Entegris, Inc.
- Refractometric System for Conducting Urinalysis in a Toilet9 Jul 2026US 2026/0194461 A1Vivosens Inc
- System and method for phase change material analysis19 Feb 2026US 2026/0049929 A1Sunamp Limited
- Thermo-optic coefficient measurement systems19 Jun 2025US 2025/0198920 A1Simmonds Precision Products, Inc.
- Refractometer, optically transmissive structure, and method of making an optically transmissive structure21 Sep 2023US 2023/0296509 A1
- Photonic chip for monitoring activities of living cells5 Jan 2023US 2023/0003644 A1The University of Hong Kong
Most cited
By later US patents
- Automatic refractometer30US 4,640,616 ACambridge Instrument Company, Inc. · 1987
- Method and apparatus for optical measurement of concentration and temperature of liquids23US 6,549,276 B1The Research Foundation of State University of New York · 2003
- Measuring the refractive index of liquid20US 4,834,533 ARicoh Company, Ltd. · 1989
- Apparatus for detecting fuel mixture ratio14US 4,749,274 AToyota Jidosha Kabushiki Kaisha · 1988
- Liquid testing apparatus11US 4,918,979 AGodfrey Howden Pty. Ltd. · 1990